[0] https://pc.watch.impress.co.jp/docs/news/1220546.html
The overview can be read in the following links: (all in japanese):
Toshiba announcement[1], National Cancer Center Japan[2][3], Nedo[4]
[1] https://www.toshiba.co.jp/rdc/detail/1911_06.htm
[2] https://www.ncc.go.jp/jp/information/pr_release/2014/0613/in...
[3] https://www.ncc.go.jp/jp/information/pr_release/2014/0613/pr...
[4] https://www.nedo.go.jp/news/press/AA5_100275.html
[5] https://www2.aeplan.co.jp/mbsj2019/
Also, here's the information regarding the project's funding and about the objective: https://research-er.jp/projects/view/920250 and https://www.nedo.go.jp/activities/ZZJP_100082.html
The original poster was pointing out that this is, so far, vaporware because Toshiba has not presented any actual scientific results, unlike Grail, Guardiant and others. Everything seen on this so far is just marketing (all of the scientific literature links on Toshiba's website are to cancer epidemiology surveys, not articles about this technology). The parent poster has yet to back up their assertion that there is "extensive research" behind it. I've been unable to find any publications or patent applications on this, so I'm very interested if someone has links.